| Alef | |
| Fullname: | Alef Vieira Santos |
| Birth Date: | 10 September 1993 |
| Birth Place: | Itabuna, Brazil |
| Height: | 1.870NaN0 |
| Position: | Centre-back |
| Currentclub: | Chiangmai |
| Clubnumber: | 14 |
| Youthclubs1: | Avaí[1] |
| Years1: | 2012–2013 |
| Clubs1: | Avaí |
| Caps1: | 20 |
| Goals1: | 0 |
| Years2: | 2013–2015 |
| Clubs2: | Internacional |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2014 |
| Clubs3: | → Paraná (loan) |
| Caps3: | 7 |
| Goals3: | 0 |
| Years4: | 2015 |
| Clubs4: | → Joinville (loan) |
| Caps4: | 11 |
| Goals4: | 1 |
| Years5: | 2017-2018 |
| Clubs5: | Guarani |
| Caps5: | 2 |
| Goals5: | 0 |
| Years6: | 2019 |
| Clubs6: | Operário |
| Caps6: | 0 |
| Goals6: | 0 |
| Years7: | 2019 |
| Clubs7: | Cuiabá |
| Caps7: | 2 |
| Goals7: | 0 |
| Years8: | 2019 |
| Clubs8: | Jaraguá |
| Caps8: | 0 |
| Goals8: | 0 |
| Years9: | 2020–2021 |
| Clubs9: | Suphanburi |
| Caps9: | 29 |
| Goals9: | 1 |
| Years10: | 2021–2023 |
| Clubs10: | Khon Kaen United |
| Caps10: | 43 |
| Goals10: | 0 |
| Years11: | 2023 |
| Clubs11: | Bhayangkara |
| Caps11: | 9 |
| Goals11: | 1 |
| Years12: | 2024– |
| Clubs12: | Chiangmai |
| Caps12: | 14 |
| Goals12: | 0 |
| Club-Update: | 11 May 2024 |
Alef Vieira Santos (born 10 September 1993), is a Brazilian professional footballer who plays as centre-back for Thai League 2 club Chiangmai.[2]
Alef was born in Itabuna.
Alef made his debut for Avai against Guarani on 9 November 2012.[3]
Alef made his debut for Parana against Ponte Preta on 1 October 2014.[4]
Alef made his debut for Joinville against Figueirense on 26 February 2015.[5] He scored his first goal for the club also against Figueirense on 12 April 2015, scoring in the 1st minute.[6]
Alef made his debut for Guarani on 19 March 2017 against Penapolense.[7]
Alef made his debut for Cuiaba on 8 June 2019 against Londrina.[8]
Alef made his debut for Suphanburi against Sukhothai on 15 February 2020.[9] He scored his first goal for the club against Police Tero on 30 October 2020.[10]
Alef made his debut for Khonkaen against Suphanburi on 30 October 2021.[11]
Alef made his debut for Bhayangkara against Persikabo on 22 July 2023.[12] He scored his first goal for the club against Persis Solo on 29 October 2023.[13]